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【单选题】

The outflow of K+ during an action potential is called( )

A.
Polarization
B.
Hyperpolarization
C.
Depolarization
D.
Reverse polarization
E.
Repolarization
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【多选题】Which is correct in the following description about gastric acid( )

A.
Denature protein in food and decompose it easily
B.
Sterilization
C.
Promote the absorption of vitamin B12
D.
Activate pepsinogen
E.
Promote the secretion of digestive juices

【单选题】The basic center of the stretch reflex is located at( )

A.
The medulla oblongata
B.
The spinal cord
C.
The midbrain
D.
Cerebral cortex
E.
The hypothalamus

【多选题】About the description of physiological hemostasis mechanism, Which of the following is correct( )

A.
Prolonged bleeding time with thrombocytopenia
B.
Short duration of local vasoconstriction reaction
C.
Platelets are involved in the formation of thrombosis and blood clots
D.
Including local vasoconstriction, preventing thrombosis and blood coagulation
E.
Coagulation time is significantly shortened with thrombocytopenia

【单选题】The most important hormone affecting nervous system development is( )

A.
Adrenaline
B.
insulin
C.
Thyroid hormone
D.
aldosterone
E.
Growth hormone

【单选题】The heart index is equal to( )

A.
Heart rate × body surface area/cardiac output
B.
Cardiac output/body surface area
C.
Stroke output/body surface area
D.
Heart rate × stroke output/body weight
E.
Returned blood volume/body surface area

【单选题】Under normal circumstances, pulmonary ventilation resistance mainly comes from ( )

A.
Viscous resistance
B.
Lung retraction force
C.
Airway resistance
D.
Inertial resistance
E.
Alveolar surface tension

【多选题】Physiological activities regulated by positive feedback( )

A.
Action potential depolarization phase
B.
Blood coagulation
C.
Childbirth
D.
Thermoregulation
E.
Micturition reflex

【单选题】The most critical site for determining urine volume is( )

A.
Proximal tubule
B.
The manifold
C.
Thick ascending branch of loop of medullary
D.
Thick segment of descending branch of loop of medullary
E.
Loop of pulposus ascending ramus

【单选题】The common manifestation of most excitable cells responding to stimuli is to produce( )

A.
Secretion
B.
Action potential
C.
Nerve impulses
D.
contraction
E.
End plate potential